Fountain pen



s. M. SAGER FOUNTAIN PEN l May 4, 1937.

Filed Jan.` 18, 1936 MEE Patented May 4, 1937 UNITED STATES PATENT OFFICE 11 Claims.

This invention relates'to an improved type of fountain pen provided with an improved filler unit adapted to be engaged on one end of the fountain `pen barrel in cooperating relation with the inner end of the shank of the fountain pen feed bar.

of which is normally disposed to seat within a recess provided in said casing or cap. It is furthermore an object of this invention to provide a fountain pen with a filler unit in the form of a fountain pen barrel closure cap con,

taining a bulbous rubber-like structure having bulbous structure for filling the fountain pen barrel and collapsible into a release position permitting the bulbous structure to normally remain in an expanded or inflated position to obviate setting of the rubber-like bulb material which often occurs in fountain pens wherein the bulb structure remains compressed during the time the operating lever is seated in a closed position. It is an important object of this invention to provide a fountain pen wherein the barrel has removably engaged on one end thereof a casing or cap for enclosing a compressible bulbous rubberlike structure closed at one end by a packing head and having the other end or base formed to act as a packing to prevent leakage of ink from the barrel into the casing and grooved for holding an apertured closure disc or plate to expand the base into a tight t with the casing and also serve as an air control when the bulbous structure is operated by means of a collapsible and manually slidable plunger connected with a strap spring seated on the exterior of the normally inated bulbous structure to serve as a protection for the bulbous structure as well as a means for assisting in the return of the plunger into an outwardly projecting operating position after a compression of the bulbous structure to cause ink to be drawn into the fountain pen barrel.

Other and further important objects of this 5 invention will be apparent from the disclosures 60 described.`

(Gl. 1Z0-46) On the drawing:

Figure 1 is a longitudinal sectional View of av fountain pen embodying the principles of this invention and showing parts of the fountain pen in elevation.

Figure 2 is a fragmentary elevational View of one end of the fountain pen barrel having an improved filler unit removably secured thereto.

Figure Bis a longitudinal sectional view of the filler unit and showing the bulbous structure partially collapsedvby means of the operating plunger.

Figure 4 is an elevationof the bulbous ller structure removed from its protecting casing and having the operating plunger removed.

Figure 5 is an enlarged fragmentary detail section taken on line V-V of Figure 2 illustrating the operating position of the pivoted plunger in dotted lines..

Figure 6 is a fragmentary detail section taken on line VI-VI of Figure 5. t

Figure 7 is Va fragmentary sectional. vieW similar to that illustrated in Figure 5 covering a modied form of plunger or operating means for actuating the bulbous structure of the ller unit.

As shown on the drawing:

The improved fountain pen comprises anv elongated hollow barrel I which is internally threaded at one end and which has integrally formed on the opposite end an externally threaded rim or` neck 2. Threaded into the internally threaded end of the barrel I is the threaded shank 3 of a section 4. Secured in overlapping relation in the section 4 is a pen point 5 and a feed bar 6. The feed bar 6 is provided with an elongated shank 1 which projects through the section 4 and extends longitudinally through the major portion ofthe ink chamber of the barrel I to within a short distance of the outer end of the barrel. For the purpose of protecting the pen point 5 when the fountain pen is not in use, a closure cap 8 is removably engaged over the pen point end of the fountain pen barrel.

Removably engaged on the threaded neck end 2 of the fountain pen barrel I is a filler unit comprising a chambered housing or casing 9 which is closed at its outer end and internally threaded at the inner open end thereof. Provided in the wall of the casing 9 is an opening I0 and a recess II communicating therewith. Seated Within the casing 9 is an elongated or oval shaped bulbous rubber-like structure I2 closed at'one end by an integral top or packing head I3 of solid material and formed to tightly t within the closed end of the casingl 9 and serve as a packing when necessary. Integrally formed on the opposite end of the bulb structure I2 is an internally grooved packing base I4 the bottom of which is provided' with an opening I 5. Seated within the internally grooved base I4 is a washer or plate I6 which expands the elastic base into a tight sealing t with the inner wall of the casing 9 to prevent leakage of ink into said casing around the bulb and out through any casing openings. The washer I6 is provided with a small central aperture I1 which is in register with the opening I5 and provides an outlet or an inlet for the air chamber within the rubber-like bulb I2.

Seated against the exterior of one side of the bulb I2 is a flexible resilient metal strap spring I8, the ends of which project into or are imbedded in the solid bulb head I3 and the neck portion of the base I4 as clearly illustrated in Figure 1. Integrally formed on opposite sides of the middle portion of the strap spring I8 is a pair of ears or lugs I9 and 20 between which the head end of an operating lever or plung-er 2| is pivotally engaged. Formed on one of the side plates 22 forming the head of the plunger 2| is a detent 23 (Figure 6) which is adapted to lockingly seat in an opening 24 provided in the ear or lug I9 to hold the lever or plunger 2| latohed in the operating or projecting position illustrated in Figure 3. Also provided in the lug I9 is an aperture 25 which is adapted to lockingly receive the detent 23 for the purpose of holding the lever or operating plunger 2| latched in the closed position illustrated in Figure 1.

Normally the operating lever or plunger 2| is in the closed position illustrated in Figure 1 permitting the bulb I2 to normally assume an inflated position. When it is desired to ll the fountain pen, the cap 8 is removed and the pen point is projected into a supply of ink. The operating plunger 2| is then pivotally swung outwardly into the dotted line projecting position, illustrated in Figure 5, without causing deflation or compression of the bulb I2. When in its outwardly projecting position, the plunger 2| is adapted to be slidably projected inwardly through the opening I0 to cause the flexible strap spring I8 to compress or collapse the resilient rubber-like bulb I2 as illustrated in Figure 3. Upon release of the operators finger from the depressed plunger 2| the bulb I2 together with the deflected strap spring I8 acts to project the plunger 2| outwardly to permit the same to be Yagain manually pushed inwardly to repeat the collapsing operation of the bulb. These operations are repeated until the ink chamber of the fountain pen barr-el I is filled. After the filling of the fountain pen, the plunger 2| is swung into the position illustrated in Figure 1 without causing compression of the spring I8 or the bulb |2 and seats in the recess II, in which position the plunger is held latched by means of the locking detent 23 seating in the aperture 25 of the member I 9,

Figure 7 illustrates a modified form of the operating means for actuating the bulb i2 and the strap spring I8 associated therewith. The modified form of actuating means comprises two operating levers or plungers 26 each of which is provided with a detent 21. The operating plungers 26 are pivotally supported on lugs or ears formed on the side margins of the spring I8. Normally the operating plungers 25 are swung downwardly in opposite directions to seat in a recess provided in the casing 9 without disturbing the inated position of the bulb. When it is desired to actuate the filling means, the plungers 26 are swung outwardly into the dotted line positions of Figure 7, without compressing the spring I8 or the bulb I2, in which position they are engaged back to back to provide a plunger having a larger bearing contact with the spring I8 for operating the flexible filling bulb I2.

It will be understood, of course, that the various details of construction may be varied through a wide range without departing from the principles of this invention, and it is therefore not the purpose to limit the patent granted hereon otherwise than necessitated by the scope of the appended claims.

I claim as my invention:

1. A fountain pen comprising an elongated barrel, a section in one end of the barrel, a pen point anda feed bar secured in the section, said feed bar having an integral elongated reduced shank extending through the barrel to within a short distance of the outer end thereof, a filler unit removably engaged on the end of the barrel opposite the section, said filler unit comprising a casing closed at the outer end and open at the inner end, with said inner end removably engaged on the end of the fountain pen barrel, said casing having an opening and a recess formed in the wall thereof, a resilient rubber-like bulbous structure enclosed by the casing and having an apertured end thereof positioned adjacent the end of the feed bar shank Within the barrel, a resilient strap spring in the casing seated against the side of the bulbous structure, and an operating member movably connected with the strap spring and projecting through the casing opening to permit operation of the bulbous structure for filling the fountain pen barrel, said operating member when not in use being adapted to be .moved into an out-of-the-way position to seat in the recess provided in said casing.

2. A fountain pen comprising an elongated barrel, a section in one end thereof, a pen point and a feed bar secured in the section, said feed bar having an elongated reduced shank extending through the barrel to within a short distance of the end thereof, a ller unit engaged on the end of the barrel opposite the section, said filler unit comprising a casing closed at one end and open at the opposite end for engagement on the barrel, said casing having an opening and a recess formed in the wall thereof, a bulbous structure in the casing having a head integrally formed on one end thereof seated in the closed end of the casing, an apertured disk seated in the opposite open end of the bulbous structure adjacent the end of the feed bar shank, a resilient strap spring seated against the side of the bulbous structure and having the ends thereof embedded in the material forming the bulbous structure, and operating means pivotally connected with the strap spring and projecting through the casing opening to permit compression of the bulbous structure to cause filling of the fountain pen, said operating means when not in use adapted to be moved into a position to seat in the recess provided in said casing.

3. A fountain pen comprising a barrel including a section in one end thereof, a pen point engaged in the section, a feed bar in contact with the pen point and engaged in the section, said feed bar having an integral portion thereof extending through the section and through substantially the entire length of the ink chamber of the fountain pen barrel, a casing closed at f one end and open at the opposite end removably engaged on the end of the fountain pen barrel opposite the section, a bulbous filling structure seated in the casing for coaction with the feed bar, a strap spring seated on the exterior of the 75 bulbous structure and having the ends thereof embedded in the material forming the bulbous structure, and operating means connected With the strap spring and operable through the casing for actuating the bulbous structure to cause filling of the fountain pen.

4. In a fountain pen, a ller unit comprising a casing closed at one end and open at the opposite end for engagement on one end of the fountain pen barrel, a bulbous structure engaged in the casing and having a solid head integrally formed on one end thereof to seat in the closed end of the casing, said bulbous structure having an internally grooved base integrally formed on the opposite end thereof, an apertured disk seated in the grooved base, a spring seated against the exterior of the bulbous structure and having the ends thereof embedded in the bulbous Structure head and base, and operating means pivotally connected to the spring and slidably projecting through an opening in the casing to permit operation of the bulbous structure to cause filling of the fountain pen barrel, said casing being provided with a recess for receiving the operating means when the same is not in use.

5. In a fountain pen, a filler unit comprising a casing closed atone end and open at the opposite end for engagement on one end of the fountain pen barrel, a bulbous structure engaged in the casing and having a solid head integrally formed on one end thereof to seat in the closed end of the casing, said bulbous structure having an internally grooved base integrally formed on the opposite end thereof, an apertured disk seated in the grooved base, a spring seated against the exterior of the bulbous structure and having the ends thereof embedded in the bulbous structure head and base, operating means pivotally connected to the spring to permit operation of the bulbous structure to cause lling of the fountain pen barrel, said casing being provided with a recess for receiving the operating means when the same is not in use, and latch means between the operating means and said spring for holding the operating means in latched position in both an operating position and when in a collapsed position when seated in the recess provided in the casing.

6. In a fountain pen, a filler unit comprising a casing closed at one end and open at the opposite end, with said open end of the casing removably engaged on one end of the fountain pen barrel, a `bulbous structure engaged in the casing closed at one end and open at the opposite end, an apertured disk seated in the open end of the bulbous structure and expanding the same into sealing contact with the interior of the casing, a spring contacting the bulbous structure and partly embedded therein, and operating means connected with the spring and projecting through an opening provided in the casing to permit operation of the bulbous structure from the exterior of the casing to cause filling of the fountain pen.

7. In a fountain pen, a filler unit for removable engagement on one end of the fountain pen barrel, said filler unit comprising a casing, a bulbous structure in the casing closed at one end and having an internally grooved base formed on the opposite end, an apertured disk in the internally grooved base, a flexible member seated against the exterior of the bulbous structure and partially embedded therein, an operating member pivotally connected with the flexible member and accessible through an opening in the casing to permit operation of the bulbous structure, and latching means between the exible member and the operating member to hold the operating member latched either in an operating position or in a collapsed position.

8. A ller unit for use in a fountain pen, said filler unit comprising a casing closed at one end and open at the opposite end, said casing having a communicating opening and recess formed in the wall thereof, a bulbous structure engaged in the casing and having a solid head formed on one end thereof for seating in the closed end of the casing and also having an internally grooved base formed on the opposite end thereof, an apertured disk seated in said base, a spring member seated against the side of the bulbous structure and having portions thereof embedded in said bulbous structure, an operating plunger pivotally connected to said spring member and slidably projecting through the opening in the casing to permit operation of the bulbous structure, and latching means between the spring member and said operating plunger for holding the operating plunger latched either in operating position or in a collapsed position when seated in the recess provided in the casing.

9. In a fountain pen, a filler unit for engagement on one end of the fountain pen barrel, said filler unit comprising a casing, a bulbous structure in the casing, packing means integrally formed at both ends of the bulbous structure and of greater diameter than the bulbous structure for providing tight seals with the casing, a flexible member seated against the bulbous structure between the packing means, and a manually reciprocable operating member connected with the flexible member for operating the bulbous structure to cause filling of the fountain pen, said operating member adapted to be seated in the casing Wall or moved into an operating position projecting outwardly from the casing without causing deflation of the bulbous structure when in either of said positions.

10. A fountain pen filler unit comprising a casing, a bulb in the casing, a packing head formed on one end of the bulb and sealingly contacting the interior of the casing, a grooved packing base formed on the opposite end of the bulb, an apertured disc engaged in the grooved base to expand the same into sealing contact with the interior of the casing, a strap spring in the casing seated against the bulb, and an operating member pivoted to the spring.

l1. A fountain pen ller unit comprising a casing, a bulb in the casing, a packing head formed on one end of the bulb and sealingly contacting the interior of the casing, a grooved packing base formed on the opposite end of the bulb, an apertured disc engaged in the grooved base to expand the same into sealing contact with the interior of the casing, a strap spring in the casing seated against the bulb, an operating member pivoted to the spring, and means for locking the operating member in retracted and in extended positions.

SOLOMON M. SAGER. 

